 * {
     margin: 0;
     padding: 0;
     box-sizing: border-box;
     font-family: 'Microsoft YaHei', sans-serif;
 }

 body {
     background: linear-gradient(135deg, #0a0c2e 0%, #1a1a40 100%);
     color: #e0f7fa;
     line-height: 1.6;
     min-height: 100vh;
     overflow-x: hidden;
     position: relative;
 }

 /* 星空背景 */
 .stars-bg {
     position: fixed;
     top: 0;
     left: 0;
     width: 100%;
     height: 100%;
     pointer-events: none;
     z-index: -1;
 }

 .star {
     position: absolute;
     background: #fff;
     border-radius: 50%;
     animation: twinkle var(--duration, 5s) infinite var(--delay, 0s);
 }

 @keyframes twinkle {

     0%,
     100% {
         opacity: 0.2;
     }

     50% {
         opacity: 1;
     }
 }

 /* 月球背景 */
 .moon-bg {
     position: fixed;
     top: -100px;
     right: -100px;
     width: 400px;
     height: 400px;
     background: url('https://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/FullMoon2010.jpg/1200px-FullMoon2010.jpg') center/cover;
     border-radius: 50%;
     opacity: 0.1;
     z-index: -1;
 }

 /* 返回按钮 */
 .back-btn {
     position: fixed;
     top: 20px;
     left: 20px;
     z-index: 1000;
     width: 50px;
     height: 50px;
     border-radius: 50%;
     background: rgba(33, 150, 243, 0.2);
     backdrop-filter: blur(5px);
     border: 1px solid rgba(79, 195, 247, 0.5);
     display: flex;
     justify-content: center;
     align-items: center;
     cursor: pointer;
     transition: all 0.3s ease;
     box-shadow: 0 0 15px rgba(33, 150, 243, 0.3);
 }

 .back-btn:hover {
     background: rgba(33, 150, 243, 0.4);
     transform: translateX(-5px);
     box-shadow: 0 0 20px rgba(33, 150, 243, 0.5);
 }

 .back-btn i {
     font-size: 24px;
     color: #4fc3f7;
 }

 .container {
     max-width: 1200px;
     margin: 0 auto;
     padding: 20px;
     position: relative;
     z-index: 1;
 }

 /* 头部区域 */
 header {
     text-align: center;
     padding: 120px 0 80px;
     position: relative;
 }

 .moon-animation {
     position: absolute;
     top: 50%;
     left: 50%;
     transform: translate(-50%, -50%);
     width: 300px;
     height: 300px;
 }

 .moon {
     position: absolute;
     top: 50%;
     left: 50%;
     transform: translate(-50%, -50%);
     width: 200px;
     height: 200px;
     background: url('https://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/FullMoon2010.jpg/1200px-FullMoon2010.jpg') center/cover;
     border-radius: 50%;
     box-shadow: 0 0 50px rgba(255, 255, 255, 0.3);
 }

 .change {
     position: absolute;
     top: 50%;
     left: 50%;
     transform: translate(-50%, -50%) rotate(0deg);
     width: 40px;
     height: 40px;
     background: url('https://cdn-icons-png.flaticon.com/512/2043/2043923.png') center/cover;
     animation: orbit 15s linear infinite;
 }

 @keyframes orbit {
     0% {
         transform: translate(-50%, -50%) rotate(0deg) translateX(150px) rotate(0deg);
     }

     100% {
         transform: translate(-50%, -50%) rotate(360deg) translateX(150px) rotate(-360deg);
     }
 }

 h1 {
     font-size: 4.5rem;
     margin-bottom: 20px;
     text-shadow: 0 0 20px rgba(33, 150, 243, 0.7);
     letter-spacing: 4px;
     background: linear-gradient(to right, #e6e6e6, #ffffff, #bbbbbb);
     -webkit-background-clip: text;
     -webkit-text-fill-color: transparent;
     animation: shine 3s infinite;
 }

 .subtitle {
     font-size: 2rem;
     margin-bottom: 30px;
     color: #bbdefb;
     max-width: 800px;
     margin: 0 auto 40px;
     line-height: 1.8;
     text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
 }

 .china-flag {
     display: inline-block;
     width: 50px;
     height: 35px;
     background: linear-gradient(to right, #de2910 0%, #de2910 70%, #ffde00 70%, #ffde00 100%);
     border-radius: 4px;
     margin: 0 15px;
     vertical-align: middle;
     box-shadow: 0 0 15px rgba(222, 41, 16, 0.5);
 }

 @keyframes shine {
     0% {
         text-shadow: 0 0 10px rgba(255, 255, 255, 0.7);
     }

     50% {
         text-shadow: 0 0 25px rgba(255, 255, 255, 0.9), 0 0 40px rgba(255, 255, 255, 0.5);
     }

     100% {
         text-shadow: 0 0 10px rgba(255, 255, 255, 0.7);
     }
 }

 /* 内容区域 */
 .section {
     background: rgba(13, 19, 33, 0.85);
     border-radius: 20px;
     padding: 40px;
     margin: 50px 0;
     border: 1px solid rgba(255, 255, 255, 0.2);
     box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
     backdrop-filter: blur(8px);
 }

 .section-title {
     font-size: 2.8rem;
     margin-bottom: 40px;
     color: #ffffff;
     border-bottom: 3px solid #4fc3f7;
     padding-bottom: 15px;
     display: flex;
     align-items: center;
     text-shadow: 0 0 15px rgba(79, 195, 247, 0.7);
 }

 .section-title i {
     margin-right: 20px;
     color: #ffde00;
 }

 /* 概述部分 */
 .intro-content {
     display: flex;
     flex-wrap: wrap;
     gap: 40px;
     align-items: center;
     margin-top: 30px;
 }

 .intro-text {
     flex: 1;
     min-width: 300px;
     font-size: 1.25rem;
 }

 .intro-text p {
     margin-bottom: 25px;
     line-height: 1.9;
     text-align: justify;
 }

 .intro-image {
     flex: 1;
     min-width: 300px;
     border-radius: 20px;
     overflow: hidden;
     box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
     transition: transform 0.3s ease;
     border: 3px solid rgba(255, 255, 255, 0.3);
 }

 .intro-image:hover {
     transform: scale(1.03);
 }

 .intro-image img {
     width: 100%;
     height: auto;
     display: block;
 }

 /* 任务时间线 */
 .timeline {
     position: relative;
     max-width: 1000px;
     margin: 50px auto;
     padding-left: 40px;
 }

 .timeline::before {
     content: '';
     position: absolute;
     top: 0;
     bottom: 0;
     left: 15px;
     width: 6px;
     background: linear-gradient(to bottom, #0288d1, #4fc3f7, #ffde00);
     border-radius: 3px;
 }

 .timeline-item {
     position: relative;
     margin-bottom: 60px;
     padding-left: 40px;
 }

 .timeline-item::before {
     content: '';
     position: absolute;
     top: 15px;
     left: 0;
     width: 30px;
     height: 30px;
     background: #ffde00;
     border-radius: 50%;
     z-index: 1;
     box-shadow: 0 0 15px rgba(255, 222, 0, 0.7);
 }

 .timeline-year {
     font-size: 2rem;
     color: #ffde00;
     margin-bottom: 15px;
     font-weight: bold;
     text-shadow: 0 0 10px rgba(255, 222, 0, 0.5);
 }

 .timeline-content {
     background: rgba(2, 48, 89, 0.7);
     border-radius: 15px;
     padding: 30px;
     border: 1px solid rgba(255, 255, 255, 0.2);
     box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
     position: relative;
 }

 .timeline-content::after {
     content: '';
     position: absolute;
     top: 25px;
     left: -10px;
     width: 20px;
     height: 20px;
     background: rgba(2, 48, 89, 0.7);
     transform: rotate(45deg);
     border-left: 1px solid rgba(255, 255, 255, 0.2);
     border-bottom: 1px solid rgba(255, 255, 255, 0.2);
 }

 .mission-title {
     font-size: 1.8rem;
     margin-bottom: 15px;
     color: #bbdefb;
     display: flex;
     align-items: center;
 }

 .mission-title i {
     color: #ffde00;
     margin-right: 15px;
 }

 .mission-details {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
     gap: 20px;
     margin-top: 20px;
 }

 .mission-detail {
     background: rgba(13, 19, 33, 0.7);
     border-radius: 10px;
     padding: 15px;
     text-align: center;
 }

 .detail-label {
     font-size: 0.9rem;
     color: #bbdefb;
     margin-bottom: 5px;
 }

 .detail-value {
     font-size: 1.3rem;
     font-weight: bold;
     color: #ffde00;
 }

 /* 科学成就 */
 .achievements {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
     gap: 30px;
     margin-top: 40px;
 }

 .achievement-card {
     background: rgba(2, 48, 89, 0.7);
     border-radius: 15px;
     padding: 30px;
     border: 1px solid rgba(255, 255, 255, 0.2);
     transition: all 0.3s ease;
     position: relative;
     overflow: hidden;
 }

 .achievement-card::before {
     content: '';
     position: absolute;
     top: 0;
     left: 0;
     width: 100%;
     height: 5px;
     background: linear-gradient(to right, #de2910, #ffde00);
 }

 .achievement-card:hover {
     transform: translateY(-15px);
     box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
 }

 .achievement-icon {
     font-size: 3.5rem;
     color: #ffde00;
     margin-bottom: 25px;
     text-align: center;
 }

 .achievement-title {
     font-size: 1.8rem;
     text-align: center;
     margin-bottom: 20px;
     color: #ffffff;
 }

 .achievement-desc {
     font-size: 1.1rem;
     line-height: 1.8;
 }

 /* 未来规划 */
 .future-section {
     background: linear-gradient(to right, rgba(2, 48, 89, 0.8), rgba(13, 19, 33, 0.9));
     border-radius: 20px;
     padding: 50px;
     margin: 60px 0;
     border: 1px solid rgba(255, 255, 255, 0.3);
     position: relative;
     overflow: hidden;
 }

 .future-section::before {
     content: '';
     position: absolute;
     top: 0;
     left: 0;
     width: 100%;
     height: 100%;
     background: url('https://images.unsplash.com/photo-1454789548928-9efd52dc4031?q=80&w=1000') no-repeat center center;
     background-size: cover;
     opacity: 0.1;
     z-index: -1;
 }

 .future-title {
     font-size: 3rem;
     margin-bottom: 40px;
     color: #ffde00;
     text-align: center;
     text-shadow: 0 0 15px rgba(255, 222, 0, 0.5);
 }

 .future-plans {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
     gap: 30px;
 }

 .plan-card {
     background: rgba(13, 19, 33, 0.8);
     border-radius: 15px;
     padding: 30px;
     border: 1px solid rgba(255, 255, 255, 0.2);
     box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
 }

 .plan-title {
     font-size: 1.8rem;
     color: #ffde00;
     margin-bottom: 20px;
     display: flex;
     align-items: center;
 }

 .plan-title i {
     margin-right: 15px;
 }

 .plan-desc {
     font-size: 1.1rem;
     line-height: 1.8;
     margin-bottom: 20px;
 }

 .plan-details {
     padding-left: 20px;
 }

 .plan-details li {
     margin-bottom: 10px;
     display: flex;
     align-items: flex-start;
 }

 .plan-details li i {
     color: #ffde00;
     margin-right: 10px;
     min-width: 20px;
     margin-top: 5px;
 }

 /* 页脚 */
 footer {
     text-align: center;
     padding: 60px 0 40px;
     color: #90a4ae;
     border-top: 1px solid rgba(255, 255, 255, 0.1);
     margin-top: 50px;
     font-size: 1.1rem;
     position: relative;
 }

 .footer-logo {
     display: flex;
     justify-content: center;
     align-items: center;
     margin-bottom: 30px;
 }

 .footer-logo i {
     font-size: 3rem;
     color: #ffde00;
     margin: 0 20px;
     animation: pulse 2s infinite;
 }

 @keyframes pulse {

     0%,
     100% {
         transform: scale(1);
     }

     50% {
         transform: scale(1.1);
     }
 }

 .quote {
     font-size: 1.4rem;
     font-style: italic;
     max-width: 800px;
     margin: 30px auto;
     color: #bbdefb;
     line-height: 1.8;
     text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
 }

 @media (max-width: 768px) {
     h1 {
         font-size: 3rem;
     }

     .subtitle {
         font-size: 1.5rem;
     }

     .section-title {
         font-size: 2.2rem;
     }

     .back-btn {
         width: 45px;
         height: 45px;
     }

     .back-btn i {
         font-size: 20px;
     }

     header {
         padding: 100px 0 50px;
     }

     .moon-animation {
         width: 250px;
         height: 250px;
     }

     .section {
         padding: 30px 20px;
     }

     .timeline {
         padding-left: 30px;
     }
 }